Function tryFetch

api/sitemap.js:102–111

(target, label)

// Try a candidate URL, return parsed result only when it looks like a real sitemap
const tryFetch = async (target, label) => {
  try {
    const parsed = await fetchSitemap(target);
    if (isValidSitemap(parsed)) return parsed;
    log.debug(`${label} parsed but lacked urlset/sitemapindex (${target})`);
  } catch (error) {
    log.debug(`${label} fetch failed (${target})`, error.message);
  }
  return null;
};

const sitemapHandler = async (url) => {
  const origin = toOrigin(url);